Improvement in screw-driver



.ma eine.

- `Ltniins HART', or UNIONVILLE, CONNECTICUT;

Leners Patat No. 100,757, zama Marien 15, 1870.

IMPROVEMENT. IN SCREW-DRIVER.

The Schedule referred to in these Letters Patent and making parl: o! theame.

I, LEWIS HART, "of-.Unionville in the county of Hartford, and State of Gonueeti'cut have invented certain Improvements `in a Pocket Screw-Driver andV Wrench, of which the followingis a specification-f Nature and Objects of vthe Invention. My invention onsists in' a screw-driver so made that the blade can be taken outof the handle when adjusted fornse, its position reversed, and pushed up into the handle, so that the whole contrivance can be cairied readily in the. pocket. Also the end of the i blade, opposite from the point, contains a small recess to tit upon a nut or bolt-head, so that the conj trivauce can,'wl 1en.adjusted for the pocket, `be used i as a wrench for small nuts. f

Description of `iccofmpcmy'mg Drawings. Figure 1 is a view of the flat sideof my invention adjusted for the pocket. Figure 2 is a view of with the blade adjusted for use, and with a small porthe dat side of my intention j tion of the handle in section, showing the socket of' the blade. f.

Figure 3 is a viewof the flat side of the blade. Figure 4 is an edgewise view of the handle. Figure 5 is a viewof the socket end of the handle.

General Description.

The letter indicates the metal handle, open in the center.

b is the blade. b, the screwdriver point of the blade, and b, the wrench end of the blade.

c is the wreneh'recess. Mare lugs upouthe side of the blade, which fit into proper recesses in the socket end of the handle.

and the seetioning in fig. 2 shows just how tlie blade fits into its socket.

adjusted, as shown in iig. 1, it can be readily used as a wrench for small nuts, and that when adjusted, as shown in iig. 2, it can be used as a screw-driver.

The figures are of just the size of the instrument as heretofore made by me; of course other sizes can be made as well. rlhis instrument is designed mainly for use withv sewing-machines, and is an exceedingly handy implement.

Claims.

I claim as my inventiou- The combination of the handle a and blade b, oonstructed substantially as described furthe purpose set forth. Dated November 6, 1869. v

y LEWIS HART.`

Witnesses W. En. SIMoNns,

SAML. F. JONES.

The letter a indicates the socket end of the handle,

Itis readily obviousV that when the instrument is 

